Lane detection method and system using photographing unit

Abstract

A lane detection method includes acquiring an image in front of a vehicle using a photographing unit provided in the vehicle, detecting, from the acquired image, a positive edge (P.E.) in which a right pixel has a higher brightness value than a brightness value of a left pixel, detecting, from the acquired image, a negative edge (N.E.) in which a left pixel has a higher brightness value than a brightness value of a right pixel, generating a first expansion image by expanding a pixel by a length corresponding to a width of a lane on a right side of the positive edge (P.E.), generating a second expansion image by expanding the pixel by the length corresponding to the width of the lane on a left side of the negative edge (N.E.), and detecting the lane by combining the first expansion image and the second expansion image. In addition, a lane detection system includes a photographing unit that is provided in a vehicle to acquire an image in front of the vehicle, an edge detection unit that detects, from the image in front of the vehicle, a positive edge (P.E.) in which a right pixel has a higher brightness value than a brightness value of a left pixel and a negative edge (N.E.) in which a left pixel has a higher brightness value than a brightness value of a right pixel, an edge expansion unit that generates a first expansion image by expanding a pixel by a length corresponding to a width of a lane on a right side of the positive edge (P.E.) and generates a second expansion image by expanding the pixel by the length corresponding to the width of the lane on a left side of the negative edge (N.E.), and a lane detection unit that detects the lane by combining the first expansion image and the second expansion image.

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